Sierra high-quality engine parts are designed to meet OEM specifications. For GM Small Block V8 305-350 cu. in. (Models: 198, 200, 228, 230, 260, 898)
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Sierra 18-1976-2 Mercruiser Manifold Elbow Fits most Mercruiser V6 and V8 applications, 7 degree (4" O.D. Riser). Unlike automotive engines, all marine inboards have exhaust risers that feature a...
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Sierra 18-1908 Mercruiser Manifold Riser Spacer Mercruiser GM V6 229 and 262cu.in. (Models: 185 and 205) GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260 and 898) GM Big Block V8 454cu.in...
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Sierra 18-1908K Manifold Riser Spacer Kit Features: Packaged as a set, complete with mounting hardware 3" Riser Kit Use With: Manifold 18-1952-1 Exhaust Elbow Mounting Kit 18-8554...
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Sierra 18-0897 Mercruiser Exhaust Elbow Gasket Sierra engine parts are designed to meet OEM specifications. The 18-0897 Exhaust Elbow Gasket is a standard cooling, restrictor gasket. Fits...
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Mercruiser Manifold - Starboard - with Mounting Package by Sierra Fits most Mercruiser GM Small Blocks with End Risers. Key Features: Starboard Side Supplied with Mounting Package ...
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Sierra 18-2748 Mercruiser 4" Upper Exhaust Boot Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drive engines. Upper Tube: 4" Fits MCM 120,...
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